![]() ![]() ![]() “And so we age.” Central to this “deep chemistry” is the Krebs cycle, a complex series of reactions whereby almost all cells break down carbohydrates, fats, and proteins to produce energy, with carbon dioxide and hydrogen as waste products. ![]() “Tissue function eventually becomes strained, biosynthetic pathways falter, ATP synthesis declines and the delicate web of symbiosis between tissues begins to fray,” writes the author. The vicissitudes of life unravel the delicate symbiosis between living tissues, and hypoxia, infections, inflammation, and mutations all hamper energy flow. All creatures produce energy, and all living tissues consume it the second law of thermodynamics assures that this process is imperfect. Lane, a professor of evolutionary biology and author of The Vital Question and Life Ascending, reminds us that energy flow animates cells and sets them apart from inanimate matter. An enthusiastic, up-to-date overview of the biochemistry of life. ![]()
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